If you move to a different host, first just try the "non-modified" original install of the Swirl AJAX Chatroom, and you shouldn't have any problems. If you should, by chance, have any problems on the new host, let me know and I will be happy to get it corrected by patch or whatever means necessary. You bought the module, and our team is dedicated to making sure you can use it.
Thanks.
-- Will G.